Mass per volume density.
Drams per Fluid ounce to Pounds per Gallon Converter — dr/fl oz to lb/gal
Convert Dram per Fluid ounce (dr/fl oz) to Pound per Gallon (lb/gal) using the exact conversion factor (1 dram per fluid ounce = 0.5 pound per gallon). See the formula, worked examples, conversion table, and common uses.
Drams per Fluid ounce to Pounds per Gallon converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 59.91321366 / 119.8264273.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Drams per Fluid ounce to Pounds per Gallon
Dram per Fluid ounce and Pound per Gallon both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Both are mass per volume density units.
Formula
pounds per gallon = drams per fluid ounce × 0.5
This factor comes from each unit's defined relationship to the category's base unit: 1 dram per fluid ounce equals 59.9132136584 base units, and 1 pound per gallon equals 119.826427317 base units, so dividing one by the other gives the direct dram per fluid ounce-to-pound per gallon factor of 0.5.
Simple example
1 dr/fl oz × 0.5 = 0.5 lb/gal
1 dram per fluid ounce = 0.5 pounds per gallon.
Real-world example
1,000 dr/fl oz × 0.5 = 500 lb/gal
1,000 drams per fluid ounce = 500 pounds per gallon.
Conversion table
| Dram per Fluid ounce (dr/fl oz) | Pound per Gallon (lb/gal) |
|---|---|
| 0.1 dr/fl oz | 0.05 lb/gal |
| 1 dr/fl oz | 0.5 lb/gal |
| 10 dr/fl oz | 5 lb/gal |
| 100 dr/fl oz | 50 lb/gal |
| 1,000 dr/fl oz | 500 lb/gal |
| 10,000 dr/fl oz | 5,000 lb/gal |
Reverse conversion: Pound per Gallon to Dram per Fluid ounce
0.5 lb/gal × 2 = 1 dr/fl oz
0.5 pounds per gallon = 1 dram per fluid ounce.
drams per fluid ounce = pounds per gallon × 2
For a page dedicated to this direction, see Pound per Gallon to Dram per Fluid ounce.
Understanding the Dram per Fluid ounce (dr/fl oz)
Mass per volume density.
Understanding the Pound per Gallon
Pound per Gallon (lb/gal) measures density. The US customary unit for liquid density, based on the US gallon (231 cubic inches). It is classified as a US customary density unit.
Where it's used: United States (paint, fuel, and industrial liquid density specifications)
lb/gal vs. lb/ft³. Both are US customary density units; they're related through the real, fixed relationship between the US gallon and the cubic foot (1 cubic foot ≈ 7.48 US gallons), not a round conversion factor.
Uses of the Pound per Gallon today
- US paint and coatings density specifications
- US fuel and petroleum liquid density specs
- Industrial liquid handling and shipping weight calculations
Pound per Gallon — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per gallon are in 1 dram per fluid ounce?
1 dram per fluid ounce equals 0.5 pounds per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert dram per fluid ounce to pound per gallon?
Multiply the dram per fluid ounce value by 0.5. The converter above does this instantly to whatever precision you set.
How do I convert pound per gallon back to dram per fluid ounce?
Use the reverse factor: 1 pound per gallon equals 2 drams per fluid ounce. You can also use the swap control in the converter above to flip the direction instantly.
What is a dram per fluid ounce?
Dram per Fluid ounce (dr/fl oz) is a unit of density.
What is a pound per gallon?
Pound per Gallon (lb/gal) measures density. The US customary unit for liquid density, based on the US gallon (231 cubic inches). It is classified as a US customary density unit.
Is the dram per fluid ounce to pound per gallon conversion exact?
Yes. Both dram per fluid ounce and pound per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.5 used above is exact to as many digits as you choose to display.
What is the difference between lb/gal vs. lb/ft³?
Both are US customary density units; they're related through the real, fixed relationship between the US gallon and the cubic foot (1 cubic foot ≈ 7.48 US gallons), not a round conversion factor.